Having replaced the electronics in one of my alembics a few years ago, i can't sit in judgement. However that change didn't give me what I thought I would get from those electronics, ( low cost series II type of sound), so I went back to standard and used the experience wisely.
But as muso's we generally are looking for a sound that represents us so in that sense nothing is really out of bounds and I guess that worked for the owner, for a while anyway.
It's the kind of bass that could quite easily be restored at a good luthiers if you wanted to get it back to standard but may be cheaper to buy a standard used one.